在空气动力学上，升力是重量，推力和阻力(空气阻力)的相关的函数。
In aerodynamic terms, lift is a function of weight, thrust and drag (air resistance).
机场分析， 一套针对给定的机场跑道的详细重量限制资料。 通常与机场温度、风、和飞机襟翼位置成函数关系。
AIRPORT ANALYSIS, A comprehensive set of takeoff weight limitations for a given airport runway, generally presented as a function of airport temperature, wind, and aircraft flap setting.
在此基础上，以壳体重量为目标函数对结构进行了优化设计。
The structure is then optimized based on above methods, taking structure weight as objective function.
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